.global main    /*instrukcje .arm lub .thumb*/
.arm

.equ PIOB_PER, 0xFFFFF400
.equ PIOB_OER, 0xFFFFF410
.equ PIOB_SODR, 0xFFFFF430
.equ PIOB_CODR, 0xFFFFF434
.equ PIOC_PER, 0xFFFFF600
.equ PIOC_OER, 0xFFFFF610
.equ PIOC_SODR, 0xFFFFF630
.equ PIOC_CODR, 0xFFFFF634
.equ PIOC_PUER, 0xFFFFF664
.equ PIOC_PDSR, 0xFFFFF63C
.equ PIOC_IFER, 0xFFFFF620
.equ PIOC_ODR, 0xFFFFF614
.equ PMC_PCER, 0xFFFFFC10

.equ LED1, 0x100
.equ LED2, 0x20000000
.equ BUTTON1, 0x20
.equ BUTTON2, 0x10

.section .text /*sekcja kodu programu*/
main: /*etykieta funkcji*/

  LDR r1, =LED1     /*R1 to LED1*/
  LDR r2, =LED2     /*R2 to LED2*/
  LDR r3, =BUTTON1     /*R3 to BUT1*/
  LDR r4, =BUTTON2     /*R4 to BUT2*/

  LDR r0, =PIOB_PER
  STR r1, [r0]

  LDR r0, =PIOB_OER
  STR r1, [r0]

  LDR r0, =PIOB_SODR
  STR r1, [r0]

  ORR r0, r3, r4    /* BUTTON1 | BUTTON2*/
  LDR r5, =PIOC_ODR
  STR r0, [r5]

  LDR r5, =PIOC_OER
  STR r2, [r5]

  LDR r5, =PMC_PCER
  STR r0, [r5]

  LDR r5, =PIOC_PUER
  STR r0, [r5]

  LDR r5, =PIOC_IFER
  STR r0, [r5]

  ORR r0, r0, r2    /*LED2 | BUTTON1 | BUTTON2*/
  LDR r5, =PIOC_PER
  STR r0, [r5]

  ldr r7, =PIOB_SODR
  ldr r8, =PIOB_CODR
  ldr r11, =PIOC_SODR
  ldr r12, =PIOC_CODR
  ldr r5, =BUTTON1
  ldr r4, =BUTTON2
  ldr r2, =LED1
  ldr r3, =LED2
  ldr r1, =PIOC_PDSR

  mov r0, #0x0
while:

  str r2, [r7] /* zapalenie 1 diody */

  ldr r9, =0x57E40
loop1:
  ldr r10, [r1]

  ands r6, r10, #BUTTON1
  cmp r6, #0
  streq r3, [r11]

  ands r6, r10, #BUTTON2
  cmp r6, #0
  streq r3, [r12]




  subs r9, r9, #0x1
  bne loop1







  /*##################*/
  str r2, [r8] /* gaszenie 1 diody */
  /*##################*/








  ldr r9, =0x57E40
loop2:
  ldr r10, [r1]

  ands r6, r10, #BUTTON1
  cmp r6, #0
  streq r3, [r11]

  ands r6, r10, #BUTTON2
  cmp r6, #0
  streq r3, [r12]



  subs r9, r9, #0x1
  bne loop2

  /*##################*/
  ldr r9, =0x57E40
  /*##################*/











  movs r0, #0x0
  beq while

.end